Additive manufacturing is gaining prominence in high-tech sectors such as aeronautics and space, which recognise the importance of having an in-depth knowledge of the material feedstock used to produce their parts. Recently, the European Space Agency has started to develop its own expertise on powder characterisation within its UK-based Advanced Manufacturing Laboratory, in close collaboration with the European Space Research and Technology Centre. In this paper, a detailed study on the testing methods for determining powder and particle properties will be presented as well as storage and recycling considerations. Currently recognized standard procedures for metal powder characterisation will be critically reviewed. The developed testing methodology will be illustrated on a variety of powder samples. This study is part of a broader initiative that aims to support the establishment of a healthy powder supply chain for additive manufacturing, ensuring reliable and consistent powder feedstock for the space sector.
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